Window guard and screen



March 16, 1943. E, H, LUNKEN v 2,314,230

WINDOW GUARD AND SCREEN i Filed May 20, 1942 2 Shee'CS-She'et l ATTORA/D MarC 16, 1943. E, H, LUNKEN 2,314,230

WINDOW GUARD .AND SCREEN Filed May 2o, 1942 2 shets-sheet 2 i, INVENT R.

Yout-er sash between the outer Patented Mar. 16, 1943 UNITED STATES PATENT OFFICE 2,314,230 WINDOW GUARD AND SCREEN Edmund H. Lunken, Springfield Township, Hamilton County, Ohio Application May 20, 1942, Serial No'. 443,754

9 Claims.

This invention relates to improvements in a combined grille, insect screen and air lter for windows and the like openings.

An object of the invention is to provide a grille and screen for a window and the like opening of simple and durable structure, readily applicable to the opening framing and for a window opening installed on the exterior side of the window sash and mounted to swing outwardly for access to glass panes of the sash for cleaning.

Another object is to provide a combined grille and screen readily applicable to a window and the like framing and to be locked thereto for pro-- tecting either the full or partial opening area thereof and the grille removably carrying a screen mesh fabric.

Various other features and advantages of the invention will be more fully apparentI from the following description of the accompanying drawings in which:

Figure 1 is an elevation of a window frame viewed from the exterior side, fitted with the improved combined grille and screen for the lower half or section thereof.

Figure 2 is an enlarged section taken on line 2, 2, Figure 1.

Figure 3 is an enlarged section taken on line 3, 3, Figure 1.

Figure 4' is an enlarged section taken on line 4, 4, Figure 2.

Figure 5 is a section taken on line 5, 5, Figure 4.

Figure 6 is a vertical section through the grille frame for a portion carrying studs for attaching the top screen binding strip to illustrate the man.- ner of application to the frame.

Figure '7 is an inside plan view of the upper end of one of the side rails of the grille frame.

Figure 8 is an enlarged section on line' 8, 8, Figure 6.

Figure 9 is a perspective View of the notched end of the binding strip for the upper end of the screen fabric.

Figure 10 is an enlarged section taken on line HJ, I0, Figure 2.v

Figure 11 is a View of the inner side of the grille and screen unit parts being broken away.

Figure l2 is an enlarged section similar to the lower end of the grille frame asillustrated in Figure 2.

Referring to the drawings, the improved combined grille and screen is exemplified as apn plicable to a conventional window frame I, employing a pair of sliding sash, as an upper sash 2, and a lower sash 3. The grille and screen unit is preferably shown as a protection for the lower section of the frame opening although it is obvious that it may be extended to serve for the full area of opening and is located adjoining the blind stops of the window frame and adapted to swing outwardly for access to the glass of the sash for cleaning,` although as a unit it may be readily completely removed. y

The frame of the grille comprising: a pair of corresponding side rails 4, 4, of a length approximately the full heighth of the opening of the window frame into which the grille is fitted with a tolerance for a slight vertical sliding movement to unlatch the grille frame from a locking connection with the sill of the window frame.

The side rails preferably are of a channel form in crosssection, with the channel G, of each thereof facing inward of theframe and one of the flanges, as the outer, is vof extended form and folded upon itself to provide an extension 1, at an angle and beyond the outer or opposite side of the web of the rail. The extension 1, may, as shown in Figure 8, be in the form` of a separate strip folded inwardly .along one of its longitudinal margins to engageabout the outer flange of the rail and welded or, otherwise secured thereto.

The method of forming the rail veither from a single or several strips, is optional and it is preferable that the outer flange possesses a greater width than the inner, for increased overlap upon the edges of a screen fabric engaged within the channels of the side rails.

The side rails are connected by a plurality of grid bars or rods I0, having their opposite ends respectively centrally within the channels thereof and are welded or otherwise permanently secured to the siderails. They are located preferably at uniform spacing apart, although the number and the spacing is optional and as shown are arranged for the lower sash section of the window opening. The lowermost bar of the series is located at the lower end of the side rails, free from direct bearing contact with the sill of the window frame sufficient to permit a screen fabric to-be looped thereabout and closing the vspacing betweenY the, bar and sill against the admission of insects. v y, i

The particular cross-sectional form of the side rails and the rail connecting grid `bars Welded together produces an extremely rigid structure for a protective barrier for the window. opening.

Y Each of the side rails at its upper end has an elongated slot therethrough .for the reception of a screw 8, secured in the window frame, the slot allowing sufficient play to slightly elevate the grille frame for unlocking its lower end from the sill of the window frame, normally engaged within a pair of U-clips Il, Il, xedto the sill of the window frame locking the grille frame against lateral displacement.

The grille frame is locked against vertical unlatching movement by a pair of latches I2,. I2, each at one end respectively pivotally attached to the inner side of a side rail for engaging its free end beneath the screw 8. To release the latches I2, it is necessary to slide the top or upper sash of window downwardly a sufficient distance to unobstruct the swing of the latches from their engagement beneath the screws or studs 8, which pivotally mount and secure the upper end of the grille frame within the window frame. Upon disengaging the latches I2, from the screws 8, the grille frame can be slid vertically to disengage its lower end from the U-clips II, and then swung outwardly and sustained in an outward inclined position for access to the outer side of panes oi sash for cleaning.

Additional means are provided for locking the grille to the window frame and also to the upper sash, comprising: a bolt I3, slidably mounted Within a housing I4, welded or otherwise secured to the inner side of a side rail of the grille frame for engaging ,the bolt into an aperture or thimble I5, within the outer blind stop I6 of the window frame` A screw bolt I1, is rotatably mounted within a thimble I8, set within a bore through a stile or rail of the upper sash, and the screw bolt has a threaded engagement with the housing I4, sustaining the slide bolt I3.

The slide bolt I3, provides against outside vertical release movement of the 4grille frame in a lowered position of the upper sash and can be utilized in substitution of the swinging latches I I, and the screw bolt I1, when engaged with the grille frame secures the upper sash from being lowered or moved from its fully closed position and in the closed position of the upper sash also serves against elevating the grille frame for release from the locking clips Il, fixed to the sill at the bottom of the grille frame. The various locking devices employed secure the 4grille frame against malicious unlocking from the outside.

The ange 1, extending from the outer side of the web of the side rails provides for an overlap and contact with the outer side of a relative blind stop of the window frame while the web of the rail overlies the face side of the blind stop. This permits the frame to be made to a scant width measurement for a free t between an opposing pair of blind stops and thereby accommodate for any irregularities or out of plumb condition of the parts to avoid the necessity of special sizing and tting to make an installation with standard or conventional sizes of window frames.

The structure of the grille provides for combining a screen fabric therewith to increase its utility, and the screen fabric may be either of metal or cloth type. The screen fabric is readily applicable within the grille frame and its kind of material is optional, either can be substituted for the other to meet the users preference, or for a different seasonal service. A cloth open mesh fabric serves admirably as an air filter and can be removed periodically for washing.

In the employment of a wire mesh screen fabric the opposite longitudinal ends of the fabric are securely attached respectively to a binding strip, the strip I '1, for top end of the screen fabric, is notched to engage within the channels of the side rails of the frame, and at one end is provided with an aperture to engage over a stud IQa, rigidly fixed to the side rail and centrally within the channel, while the opposite end of the binding strip is notched to be removably engaged laterally with a stud ISa, within the channel of an adjoining side rail for convenient insertion and removal of the binding strip from the rails. The strip I9, also of a sufficient cross-sectional dimension to have a bearing or sealing contact with the outer side of the lower cross rail of the'upper sash.

The free or selvage edges of the screen fabric are engaged or tucked between the outer flange 1, of the side rails and grid bars and loops over the lowermost-bar of the series to bring the opposite bound edge of the fabric upon the reverse or inner side of the screen fabric and adapt the same to be secured to a grid bar by fasteners, which in the present instance is shown, as a tie string or lace 26. With a lace the fabric can be stretched under sufficient tension for its taut application within the grille frame and with suiiicient security to prevent its free longitudinal edges from being accidentally sprung out from behind the overlapping flange of the side rails when subjected to wind of ordinary pressures while in use.

For a wire mesh screen, the lower end is secured to a binding strip 2|, either of wood or metal by any of the various methods employed in securing a wire screen to either a metal or wood frame.

In the employment of a cloth screen or netting fabric, the opposite ends of the fabric are each hemmed to be sleeved over the anchoring or binding rods i9 and 2|.

The tie string or lace 20, is threaded about the lower binding strip 2|, and looped over grid bar, and the endsof the lace tied together after the screen fabric has been drawn to a suicient degree of tautness.

It is also feasible to interlace the screen cloth fabric with the grid bars in a Zig-Zag fashion over relative alternate sides thereof to secure or span the same against heavy wind pressures from either side thereof.

A cloth fabric is readily obtained in diiferent mesh patterns and various colors so that it will supply as drapery in addition to its utility as an insect screen and air filter.

To remove the screen the lower end is unfastened and the upper binding strip I9, is moved upward at an angle to dis-engage its notch end from the stud IBa, after which the opposite apertured end can be longitudinally withdrawn from its stud I9a.

Thin flexible stay strips may also be employed for securing the margins of the screen fabric within the side frames by tucking the saine between the fabric `and crossbars, or short length stay strips may be exed over the grid bars alternately.

A handle bar 22, as a grid bar connects with the inner anges of the side rails 4.

For windows of excessive Width or for general reinforcement of the guard the grid bars may be connected as shown in dotted lines Figure 11, with stay bars or strips 23 having their opposite ends permanently fixed to relative grid bar, and also at intermediate points leaving the same unattached to alternate bars for zig-zagging a screen fabric over the bars following one method of applying the screen fabric, the application of the stays may ybe either at the outer or inner side of the guard.

Having described my invention, I claim:

1. A combined window guard and screen, comprising: a pair of flanged side rails of the height of the opening of a window frame, each at its upper ends pivotally connected to the window frame and their lower ends having an interlocking seating engagement with the sill of the window frame detachable therefrom upon vertically elevating the guard, grid bars in relative spacing interposed between said rails, and having their opposite ends respectively fixed thereto, and a screen fabric having its opposite edges engaged between said grid bars and a flange longitudinal of each of the rails to confine the associated screen edge, the opposite ends of the screen each having a binding strip, the binding' strip for the upper end of the screen fabric adapted at its opposite ends to be removably fixed to said side rails, said fabric at its lower end looped about the lowermost grid bar bringing its lower end in a return direction upon an opposite side of the grid bars and connecting with one thereof.

2. A combined window guard and screen, comprising: a pair of flanged side rails, grid bars in relative spacing interposed between said rails and having their opposite ends respectively fixed thereto, and a screen fabric having its opposite edges engaged between said grid bars and a flange longitudinal of each of the rails to confine the associated screen edge, the opposite ends of the screen each having a binding strip, the binding strip for the upper end of the screen fabric adapted at its opposite ends to be fixed to said side rails, said fabric at its lower end looped about the lowermost grid bar bringing its lower end in a return direction upon an opposite side of the grid bars and connecting with one thereof.

v 3. A combined window guard and screen, comprising: a pair ci flanged side rails, grid bars in relative spacing interposed between said rails and having their opposite ends respectively fixed thereto, a screen fabric having its opposite edges engaged between said grid bars and a flange longitudinal of each of the rails to confine the associated screen edge, and means extending between and fixed to the Side rails for securing the upper end of the screen fabric, said fabric at its lower end looped about the lowermost grid bar bringing its lower end in a return direction upon an opposite side of the grid bars and connecting with one thereof.

4. A combined window guard and screen, comprising: a pair of flanged side rails of the height of the opening of a window frame, each at its upper end pivotally connected to the window frame and its lower end having an interlocking seating engagement with the sill of the window frame detachable therefrom upon vertically elevating the guard, means pivotally mounted upon one of said side rails movable in parallelism to and together therewith to with-hold elevating the guard when inone position, and obstructed from moving to a release position by the window sash when in a closed position, grid bars in relative spacing interposed between said rails, and having their opposite ends respectively fixed thereto, and a screen fabric having its opposite edges engaged between said grid bars and a flange longitudinal of each of the rails to confine the associated screen edge, and having its upper and lower ends engaged with a binding strip for attaching the screen fabric to the guard.

5. A combined window guard and screen. comprising: a pair of side rails of the height of the opening of a window frame, each at its upper end pivotally connected to the window frame and their lower ends having an interlocking seating engagement with the sill of the window frame detachable therefrom upon vertically elevating the guard, means pivotally mounted upon one of said side rails movable in parallelism to and together therewith to engage the pivotal support of the side rail when in one position to withi-hold elevating the guard when in one position, and obstructed from moving to a release position by the Window sash when in a closed position, and grid bars in relative spacing interposed between said rails, and having their opposite ends respectively fixed thereto.

6. A combined window guard and screen, comprising: a pair of side rails each at its upper end pivotally connected to the window frame and their lower ends having an interlocking seating engagement with the sill of the window frame detachable therefrom upon vertically elevating the guard, means pivotally mounted upon one of said side rails movable in parallelism to and together therewith to engage the pivotal support of the side rail to with-hold elevating the guard when in one position, and obstructed from moving to a release position by the window sash when in a closed position, and grid bars in relative spacing interposed between said rails, and having their opposite ends respectively fixed thereto.

7. A combined window guard and screen, comprising: a guard frame of siderails joined by a plurality of transverse grid bars, said side rails each being of U-section, the outer flange thereof having a rebent portion adapted to overlap and bear against an associated blind stop of a window frame in which the guard frame is disposed, and the inner flange overlapping the associated ends of the grid bars, and a screen fabric spanning said grid bars with its opposite longitudinal margins engaged between the grid bars and inner flanges of the side rails, the upper ends of the screen fabric having a crossstrip detachably connected at its opposite ends with the side rails, and the lower end of the fabric looped about the lowermost grid bar to reversely extend therefrom and attached to one of the grid bars.

8. A combined window guard and screen, comprising: a guard frame of side rails joined by a plurality of transverse grid bars, said side rails longitudinally having flanges extending laterally from 'opposite sides of the web porti-on thereof, the inner flange overlapping the associated ends of the grid bars, and a screen fabric spanning said grid bars with its opposite longitudinal margins engaged between the grid bars and inner flanges of the side rails, the upper end of the screen fabric having a cross-strip detachably connected at its ends to the side rails, the lower end of the fabric looped about the lowermost grid bar to reversely extend therefrom and attached to one of the grid bars under a tension condition.

9. A combined window guard and screen, cornprising: a pair of flanged side rails, grid bars in relative spacing interposed between said rails and having their opposite ends respectively fixed thereto, means carried by said side rails for locking the same to the window frame and to a sash therein, a screen fabric having its opposite side edges engaged between said grid bars and one of the flanges of the respective rails to confine the screen, and means extending between and xed to the side rails for securing the upper end of the screen fabric, said fabric at its. lower end being looped about the lowermost grid bar and extending in a return direction upon an opposite side of the grid bars and connecting with one thereof,

EDMUND H. 'LUNKEN. 

